A、A rock climber. B、A psychologist. C、A resident doctor. D、A career consultant. B短文开头作者说：作为心理学家，我们需要问自己……故正确答案为选项B)。

So we’ve already talked a bit about the growth of extreme sports like rock-climbing. As psychologists, we need to ask ourselves: Why is this person doing this? Why do people take these risks and put themselves in danger when they don’t have to? One common trait among risk-takers is that they enjoy strong feelings or sensations. We call this trait sensation-seeking. A sensation-seeker is someone who’s always looking for new sensations. What else do we know about sensation-seekers? Well, as I said, sensation-seekers like strong emotions. You can see this trait in many parts of a person’s life, not just in extreme sports. For example, many sensation-seekers enjoy hard rock music. They like the loud sound and strong emotion of the songs. Similarly, sensation-seekers enjoy frightening horror movies. They like the feeling of being scared and horrified while watching the movie. This feeling is even stronger for extreme sports where the person faces real danger. Sensation-seekers feel the danger is very exciting. In addition, sensation-seekers like new experiences that force them to push their personal limits. For them, repeating the same things everyday is boring. Many sensation-seekers choose jobs that involve risk, such as starting a new business or being an emergency room doctor. These jobs are different every day, so they never know what will happen. That’s why many sensation-seekers also like extreme sports. When you do rock-climbing, you never know what will happen. The activity is always new and different.
9. According to the speaker, what is a common trait among risk-takers?
10. What do sensation-seekers find boring?
11. What is the speaker’s profession?